CN107992317B - Method for programming and checking electric quantity management and current monitoring IC of battery cell - Google Patents
Method for programming and checking electric quantity management and current monitoring IC of battery cell Download PDFInfo
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- CN107992317B CN107992317B CN201711246565.8A CN201711246565A CN107992317B CN 107992317 B CN107992317 B CN 107992317B CN 201711246565 A CN201711246565 A CN 201711246565A CN 107992317 B CN107992317 B CN 107992317B
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- G06—COMPUTING; CALCULATING OR COUNTING
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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Abstract
The invention discloses a method for managing electric quantity of a battery cell and verifying burning of a current monitoring IC (integrated circuit), which comprises a burning method and a verifying method of battery information, wherein the verifying method comprises a current verifying method and an electric quantity verifying method, and the electric quantity verifying method comprises the following steps: firstly, calibrating the electric quantity values of a plurality of electric quantity management and current monitoring IC samples according to a calibration mechanism of the electric quantity management and current monitoring IC, and recording calibration coefficients of all channels; then, data processing is performed on the calibration coefficient in step S1; thirdly, writing the calibration coefficient processed in the step S2 into upper computer software in a fixed value form, and calling the calibration coefficient from the upper computer software during burning; finally, in the burning process, the quantity of the electric quantity management with bad calibration and the quantity of the current monitoring IC products are monitored, if the reject ratio reaches a set value, the step S1 is returned, and if the reject ratio does not reach the set value, the burning is continued. The invention is used for improving the burning calibration and verification efficiency of the electric quantity management and current monitoring IC of the battery core.
Description
Technical Field
The invention relates to the technical field of lithium ion battery testing methods and devices, in particular to a method for electric quantity management of a battery cell and burning verification of a current monitoring IC.
Background
The lithium ion battery industry generally adopts outsourcing communication box to build the mode of building the frame and establishing into the single channel, carries out the mode of monitoring calibration check high accuracy electric current. This approach is limited by TI chips and technology support. The expandability and the limitation are large, and the cost expenditure is too high. Meanwhile, the product efficiency in the field of electric quantity management and current monitoring is low in the industry, the testing time is long, and the achievement of delivery is seriously influenced.
Disclosure of Invention
The invention aims to provide a high-efficiency electric quantity management and current monitoring IC burning verification method.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method for programming and checking electric quantity management of a battery core and a current monitoring IC comprises a programming method and a checking method of battery information, wherein the checking method comprises a current checking method and an electric quantity checking method, and the electric quantity checking method comprises the following specific steps:
s1, calibrating the electric quantity values of a plurality of electric quantity management and current monitoring IC samples according to the calibration mechanism of the electric quantity management and current monitoring IC, and recording the calibration coefficient of each channel;
s2, carrying out data processing on the calibration coefficient in the step S1;
s3, writing the calibration coefficient processed in the step S2 into an upper computer temporary memory in a fixed value form through upper computer software, and calling the upper computer software from the upper computer temporary memory during burning;
and S4, in the burning process, monitoring the quantity of the electric quantity management and the current monitoring IC products with bad calibration, returning to the step S1 if the reject ratio reaches a set value, and continuing burning if the reject ratio does not reach the set value.
Further, the data processing method of the calibration coefficients in step S2 is to perform weighted average on the recorded calibration coefficients.
Further, the current verification method is calibration according to a calibration mechanism of the power management and current monitoring IC.
Further, the burning method comprises the following steps: before burning, the burning file is analyzed and stored by upper computer software in advance, and the storage position is a main singlechip register storage unit of a main control board; during burning, the master control board transmits a burning file to the slave single chip microcomputer of the test board, then the slave single chip microcomputer burns the electric quantity management and current monitoring IC of the battery cell, and the burning adopts a multi-channel parallel synchronous writing mode.
Further, the content of the burning file comprises a serial number distributed by a product, an assembly date, an SMT mounting date, a jointed board burning number, an ID position of the product distributed on a jointed board, mounting component information and burning information.
Furthermore, before burning, all burning file information is collected uniformly and transmitted to the master singlechip on the master control board uniformly, and the master singlechip controls and drives the slave singlechip on the test board to burn the contents of the burning files.
Furthermore, the upper computer is in communication connection with the main control board, the test board and the test equipment, monitors the operation of the main control board, the test board and the test equipment, and positions the installation positions of the main control board, the test board and the test equipment.
Furthermore, the host computer encodes the main control board, the test board and the test equipment, and positions the main control board, the test board and the test equipment through the encoding.
The beneficial effects realized by the invention mainly comprise the following points: the method of one-time pre-stored burning file is adopted, so that each storage time in the burning process is avoided, and the burning efficiency is improved; calibration coefficients are determined through part of samples, and then calibration coefficients are calibrated in batches, so that calibration time can be saved, and burning efficiency is improved; meanwhile, the defective rate is detected in the burning calibration process, and the calibration coefficient is determined again when the defective upper limit value is reached, so that overlarge deviation in the calibration process is avoided.
Drawings
FIG. 1 is a schematic structural diagram of a connection between an upper computer, a main control board, a test board and a product according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for checking electric quantity of a battery cell according to a first embodiment of the present invention.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.
Detailed Description
In order to facilitate understanding for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples.
Example one
Referring to fig. 1, a device for recording and verifying the electric quantity management and current monitoring IC of the battery cell includes an upper computer, a main control board, a test board and a test device (not shown); the host computer can select a commonly used computer, a main singlechip is installed on the host computer (the lower computer), a slave singlechip is installed on the test board, the test equipment comprises devices such as an ammeter and a voltmeter, and the test equipment is connected on the test board.
Referring to fig. 2, a method for programming and verifying electric quantity management of a battery cell and a current monitoring IC includes a programming method and a verification method of battery information, the verification method includes a current verification method and an electric quantity verification method, and the electric quantity verification method includes the following specific steps:
s1, calibrating the electric quantity values of a plurality of electric quantity management and current monitoring IC samples according to the calibration mechanism of the electric quantity management and current monitoring IC, and recording the calibration coefficient of each channel; for example, for a TI product, the electric quantity may be indirectly calibrated through calibration of Board Offset according to a Board Offset calibration mechanism provided by TI, specifically, the Board Offset values of the electric quantity management and current monitoring ICs on the multiple battery protection boards are calibrated, and after calibration is completed, corresponding calibration coefficients are read, collected and recorded in a summary manner; the method can be used for circularly testing 3 jointed boards according to the calibration mode of 20 PCS products in one jointed board, and the accumulated value reaches 60 PCS;
s2, carrying out data processing on the calibration coefficients in the step S1, wherein the data processing method is to calculate a weighted average value of the recorded multiple calibration coefficients; summing and accumulating the Board Offset value calibration coefficients acquired by the 60PCS product in the step S1, calculating a weighted average value, and converting the weighted average value into a two-byte form;
s3, writing the calibration coefficient processed in the step S2 into an upper computer temporary memory in a fixed value form through upper computer software, and calling the upper computer software from the upper computer temporary memory during burning;
s4, in the burning or calibration test process, monitoring the quantity of the electric quantity management and current monitoring IC products with poor calibration, returning to S1 when the reject ratio reaches a set value, calibrating the electric quantity management and current monitoring IC in the form of a fixed calibration coefficient, avoiding the occurrence of calibration deviation, in order to avoid overlarge deviation, monitoring the quantity of the electric quantity management and current monitoring IC products with poor calibration in the burning or calibration test process, if an upper limit value with the reject ratio of 5% is set, stopping burning when the reject ratio reaches 5% in the burning process, and returning to S1 to reconfirm the calibration coefficient.
The current verification (i.e., current calibration and verification) method described above is calibrated according to the calibration mechanism of the power management and current monitoring IC, such as for TI products, which may be calibrated according to the current calibration mechanism provided by TI.
The burning method comprises the following steps: before burning, the burning file is analyzed and stored by upper computer software in advance, and the storage position is a main singlechip register storage unit of a main control board; during burning, the master control board transmits a burning file to the slave single chip microcomputer of the test board, then the slave single chip microcomputer burns the electric quantity management and current monitoring IC of the battery cell, and the burning adopts a multi-channel parallel synchronous writing mode. By adopting the method, the burning file can be stored in the singlechip of the main control board at one time, so that the burning time is saved compared with the traditional method of storing while burning, for example, the traditional method needs to burn the 1024B file after storing 32B every time in 32 times, and then the next 32B file is stored and burned after burning is finished, but the method of the invention can be used for storing 1024B files at one time, so that the time of each storage is reduced, and the burning efficiency can be improved.
The contents of the burning files comprise serial numbers distributed to products, assembling dates, SMT mounting dates, jointed board burning numbers, ID positions of the products distributed on jointed boards, mounting component information and burning information. Before burning, all the burning file information is collected uniformly and transmitted to the master singlechip on the master control board uniformly, and the master singlechip controls the slave singlechip on the test board to burn the contents of the burning file. By adopting the integrated mode, the burning is unified, the burning time of a single product can be reduced, and the burning efficiency is improved.
The host computer is connected with the main control board, the test board and the test equipment in a communication mode, the host computer monitors the operation of the main control board, the test board and the test equipment, the installation positions of the main control board, the test board and the test equipment are located, and the instrument operation condition of a certain piece of equipment of a certain production line can be checked in real time. In addition, the upper computer encodes the main control board, the test board and the test equipment, and positions the main control board, the test board and the test equipment through the encoding, for example, the test board is encoded according to the form of 'X1X 1X1-X2-X3X3X3X3X 3', wherein X1(4 bits) represents the equipment number of the equipment to which the test board is applied, X2 represents the type of the PCB, for example, the type is the test board, and is marked by T, for example, the type is the main control board, and is marked by M. X3 (bit 5) represents the ID number of the test board, and is assigned from 00001. Corresponding equipment information burning platforms are established in a similar mode, and the equipment information burning platforms are written into corresponding equipment through analysis, so that positioning and monitoring are facilitated.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A method for programming and checking electric quantity management of a battery core and a current monitoring IC is characterized by comprising a programming method and a checking method of battery information, wherein the checking method comprises a current checking method and an electric quantity checking method, and the electric quantity checking method comprises the following specific steps:
s1, calibrating the electric quantity values of a plurality of electric quantity management and current monitoring IC samples according to the calibration mechanism of the electric quantity management and current monitoring IC, and recording the calibration coefficient of each channel;
s2, carrying out data processing on the calibration coefficient in the step S1;
s3, writing the calibration coefficient processed in the step S2 into an upper computer temporary memory in a fixed value form through upper computer software, and calling the upper computer software from the upper computer temporary memory during burning;
and S4, in the burning process, monitoring the quantity of the electric quantity management and the current monitoring IC products with bad calibration, returning to the step S1 if the reject ratio reaches a set value, and continuing burning if the reject ratio does not reach the set value.
2. The method for programming and verifying the electric quantity management and current monitoring IC of the battery cell according to claim 1, wherein the method comprises the following steps: the data processing method of the calibration coefficients in step S2 is to perform weighted average on the recorded calibration coefficients.
3. The method for programming and verifying the electric quantity management and current monitoring IC of the battery cell according to claim 1, wherein the method comprises the following steps: the current checking method is based on calibration mechanism of power management and current monitoring IC.
4. The method for programming verification of the electric quantity management and current monitoring IC of the battery cell according to claim 1, wherein the programming method is as follows: before burning, the burning file is analyzed and stored by upper computer software in advance, and the storage position is a main singlechip register storage unit of a main control board; during burning, the master control board transmits a burning file to the slave single chip microcomputer of the test board, then the slave single chip microcomputer burns the electric quantity management and current monitoring IC of the battery cell, and the burning adopts a multi-channel parallel synchronous writing mode.
5. The method for burn-in verification of the electric quantity management and current monitoring IC of the battery cell according to claim 4, characterized in that: the content of the burning file comprises a serial number distributed by a product, an assembly date, an SMT mounting date, a jointed board burning number, an ID position of the product distributed on a jointed board, mounting component information and burning information.
6. The method for burn-in verification of the electric quantity management and current monitoring IC of the battery cell according to claim 5, characterized in that: before burning, all the burning file information is collected uniformly and transmitted to the master singlechip on the master control board uniformly, and the master singlechip controls the slave singlechip on the test board to burn the contents of the burning file.
7. The method for the electric quantity management of the battery cell and the burning verification of the current monitoring IC according to any one of claims 1 to 6, which is characterized in that: the upper computer is in communication connection with the main control board, the test board and the test equipment, monitors the operation of the main control board, the test board and the test equipment, and positions the installation positions of the main control board, the test board and the test equipment.
8. The method for burn-in verification of the electric quantity management and current monitoring IC of the battery cell according to claim 7, characterized in that: the upper computer encodes the main control board, the test board and the test equipment, and positions the main control board, the test board and the test equipment through the encoding.
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| CN109521355B (en) * | 2018-10-30 | 2021-10-26 | 惠州市蓝微电子有限公司 | Burning calibration verification method of electric quantity management IC |
| CN111060342B (en) * | 2019-12-30 | 2022-06-17 | 3M材料技术（广州）有限公司 | System and method for calibrating a functional module of a water treatment device |
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